Add DB implementation

p1/.metadata/.plugins/org.eclipse.jdt.core/savedIndexNames.txt

@@ -7,8 +7,8 @@ INDEX VERSION 1.131+/home/max/src/cs448/p1/.metadata/.plugins/org.eclipse.jdt.co
 116444480.index
 3664742106.index
 131124632.index
-3842426239.index
 2054031921.index
+3842426239.index
 629469267.index
 1986281775.index
 1844288107.index

p1/run

@@ -1,3 +1,3 @@
 #! /bin/bash
 
-java -cp ./target/cs448p1-1.0-SNAPSHOT-jar-with-dependencies.jar -Xmx44m cs448.App "$1" "$2" "$3"
+java -cp ./target/cs448p1-1.0-SNAPSHOT-jar-with-dependencies.jar -Xmx32m cs448.App "$1" "$2" "$3"

p1/src/main/java/cs448/project1.java

@@ -2,6 +2,7 @@ package cs448;
 
 import org.mapdb.DB;
 import org.mapdb.DBMaker;
+import org.mapdb.Serializer;
 
 import java.io.IOException;
 import java.io.BufferedReader;
@@ -20,7 +21,7 @@ public class project1 {
     DB db = DBMaker.fileDB(dbfile).make();
 
     // use this for MapDB storage
-    ConcurrentMap mapdb = db.hashMap("map").make();
+    ConcurrentMap<String, String> mapdb = db.hashMap("map", Serializer.STRING, Serializer.STRING).make();
 
     void load_mainmemory(String file_path) throws IOException {
         try (BufferedReader tsvFile = new BufferedReader(new FileReader(file_path))) {
@@ -49,7 +50,29 @@ public class project1 {
     }
 
     void load_mapdb(String file_path) throws IOException{
-        /** Put your code here **/
+        try (BufferedReader tsvFile = new BufferedReader(new FileReader(file_path))) {
+            String line = "";
+            String value = "";
+            while ((line = tsvFile.readLine()) != null ) {
+                String[] parts = line.split("\t");
+                    
+                for (int i = 1; i < parts.length; i++) {
+                    if (i == parts.length) {
+                        value += parts[i];
+                    } else {
+                        value += parts[i] + "\t";
+                    }
+                    parts[i] = null;
+                }
+
+                mapdb.put(parts[0], value);
+                parts[0] = null;
+                line = null;
+                value = null;
+            }
+        } catch (IOException e) {
+            throw e;
+        }
     }
 
     String select_file(String key, String file_path) throws IOException{
@@ -81,8 +104,8 @@ public class project1 {
     String select_mainmemory(String key){
         return mm_map.get(key);
     }
+
     String select_mapdb(String key){
-        /** Put your code here **/
-        return "";
+        return mapdb.get(key);
     }
 }